we are going to have to go out and put up point. >> forty-niner offensive coordinator greg roman not worried about the young quarterback handling himself on the big stage. >> for collin it's another game and i think the way he handles it day-to-day has been very mature and i don't think you are going to see any big eyes. >>reporter: he has shown amazing maturity for a man with so few starts. >> i think it's because i have been playing football for so long. i think i said before this is my 17th year of football. so i mean, football is football once you get on the field. >>reporter: but for defensive coordinator vince rodgers is a huge concern. >> he's awful tough to defend. reminds me of dan marino in the pock. quick accurate release and he remind me of steve young when he's out of the pocket. >>reporter: if you are abetting man you have to go with rodgers. but collin will be the x factor in this match up. in santa clara mike, abc 7 sports. >> thank you. 49ers beat green bay in the regular season. that was the opener 30-22. niners 3 point favorite heading into saturday night game and